HAADF-STEM observations of a Σ13 grain boundary in α-Al₂O₃ from two orthogonal directions

摘要

Atomic structure of a Σ = 13, grain boundary in α-Al₂O₃ was directly observed by aberration-corrected Z-contrast scanning transmission electron microscopy. Combining observations from two orthogonal directions parallel to the grain boundary plane , the three-dimensional atomic configuration of the grain boundary core region can be determined, and proves to be in a good agreement with the stable boundary structure predicted by first-principles calculations.View full textDownload full textKeywordsAl2O3 , alumina, grain boundary, HAADF-STEM, HAADF-STEM image simulationRelated var addthis_config = { ui_cobrand: "Taylor & Francis Online", services_compact: "citeulike,netvibes,twitter,technorati,delicious,linkedin,facebook,stumbleupon,digg,google,more", pubid: "ra-4dff56cd6bb1830b" }; Add to shortlist Link Permalink http://dx.doi.org/10.1080/09500831003630765